Даден е следният пример: „While some functionality, such as, for example, identity, which allows customers to log on the website, or Item Master Service, which maintains a catalogue of all products sold on Amazon, has been provided since the very first days of Amazon's operations, the underlying technology would have been rewritten entirely (and continuously) over the years. […] the identity technology used by Amazon in 2010 had little to do with the identity technology used prior to 2005 – the 2005 service has been disassembled and rewritten as a number of smaller, more manageable services that together provide the identity functionality, to adapt the technology to the evolution of the scope of Amazon's operations.“
Kvartili u nizovima podataka jesu tri točke koje dijele brojke u određenom skupu poredane od najmanje do najveće u četiri jednako popunjena skupa, odnosno 25 % podataka je u okviru 25. percentila (koji se naziva i niži kvartil), 50 % podataka je ispod drugog kvartila ili mu je jednako, što je srednja vrijednost skupa i 75 % podataka je ispod 75. percentila ili mu je jednako (naziva se i gornji kvartil).